Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Limnologica Brasiliensia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2010000300007 |
Resumo: | AIM: Our study evaluated the effects of physical and chemical variables and seasonality on diversity and structure of the macroinvertebrate fauna in riffles of a Neotropical chalk stream; METHODS: Sampling was performed during the dry (September 2003) and rainy (March 2004) seasons, in five sites. Five samples were taken at each point with a Surber sampler. Physical and chemical variables were also evaluated; RESULTS: Temperature, pH, orthophosphate and total nitrogen were very similar for both seasons, while riffle length, conductivity, alkalinity, ammonia, phosphorus and leaf litter had different values. The total number of organisms collected was 25114 belonging to at least 50 families. Insects dominated in the samples. The highest abundance was found for the dry period. Temporary stretches were sampled in rainy season in order to complement the faunal inventory; CONCLUSIONS: The environmental seasonality was an important factor for structuring the macroinvertebrate fauna, with a significant difference between the invertebrate compositions in the sampling periods. The results of this study demonstrate the influences of seasonality on the temporal variation of communities. |
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Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasonsaquatic macroinvertebratesseasonalityNeotropical chalk streamriffleintermittent habitatAIM: Our study evaluated the effects of physical and chemical variables and seasonality on diversity and structure of the macroinvertebrate fauna in riffles of a Neotropical chalk stream; METHODS: Sampling was performed during the dry (September 2003) and rainy (March 2004) seasons, in five sites. Five samples were taken at each point with a Surber sampler. Physical and chemical variables were also evaluated; RESULTS: Temperature, pH, orthophosphate and total nitrogen were very similar for both seasons, while riffle length, conductivity, alkalinity, ammonia, phosphorus and leaf litter had different values. The total number of organisms collected was 25114 belonging to at least 50 families. Insects dominated in the samples. The highest abundance was found for the dry period. Temporary stretches were sampled in rainy season in order to complement the faunal inventory; CONCLUSIONS: The environmental seasonality was an important factor for structuring the macroinvertebrate fauna, with a significant difference between the invertebrate compositions in the sampling periods. The results of this study demonstrate the influences of seasonality on the temporal variation of communities.Associação Brasileira de Limnologia2010-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2010000300007Acta Limnologica Brasiliensia v.22 n.3 2010reponame:Acta Limnologica Brasiliensia (Online)instname:Associação Brasileira de Limnologia (ABL)instacron:ABL10.4322/actalb.02203007info:eu-repo/semantics/openAccessRighi-Cavallaro,Karina OcampoRoche,Kennedy FrancisFroehlich,OtávioCavallaro,Marcel Rodrigoeng2011-04-11T00:00:00Zoai:scielo:S2179-975X2010000300007Revistahttp://www.ablimno.org.br/publiActa.phphttps://old.scielo.br/oai/scielo-oai.php||actalb@rc.unesp.br2179-975X0102-6712opendoar:2011-04-11T00:00Acta Limnologica Brasiliensia (Online) - Associação Brasileira de Limnologia (ABL)false |
dc.title.none.fl_str_mv |
Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons |
title |
Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons |
spellingShingle |
Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons Righi-Cavallaro,Karina Ocampo aquatic macroinvertebrates seasonality Neotropical chalk stream riffle intermittent habitat |
title_short |
Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons |
title_full |
Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons |
title_fullStr |
Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons |
title_full_unstemmed |
Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons |
title_sort |
Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons |
author |
Righi-Cavallaro,Karina Ocampo |
author_facet |
Righi-Cavallaro,Karina Ocampo Roche,Kennedy Francis Froehlich,Otávio Cavallaro,Marcel Rodrigo |
author_role |
author |
author2 |
Roche,Kennedy Francis Froehlich,Otávio Cavallaro,Marcel Rodrigo |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Righi-Cavallaro,Karina Ocampo Roche,Kennedy Francis Froehlich,Otávio Cavallaro,Marcel Rodrigo |
dc.subject.por.fl_str_mv |
aquatic macroinvertebrates seasonality Neotropical chalk stream riffle intermittent habitat |
topic |
aquatic macroinvertebrates seasonality Neotropical chalk stream riffle intermittent habitat |
description |
AIM: Our study evaluated the effects of physical and chemical variables and seasonality on diversity and structure of the macroinvertebrate fauna in riffles of a Neotropical chalk stream; METHODS: Sampling was performed during the dry (September 2003) and rainy (March 2004) seasons, in five sites. Five samples were taken at each point with a Surber sampler. Physical and chemical variables were also evaluated; RESULTS: Temperature, pH, orthophosphate and total nitrogen were very similar for both seasons, while riffle length, conductivity, alkalinity, ammonia, phosphorus and leaf litter had different values. The total number of organisms collected was 25114 belonging to at least 50 families. Insects dominated in the samples. The highest abundance was found for the dry period. Temporary stretches were sampled in rainy season in order to complement the faunal inventory; CONCLUSIONS: The environmental seasonality was an important factor for structuring the macroinvertebrate fauna, with a significant difference between the invertebrate compositions in the sampling periods. The results of this study demonstrate the influences of seasonality on the temporal variation of communities. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2010000300007 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2010000300007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.4322/actalb.02203007 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Limnologia |
publisher.none.fl_str_mv |
Associação Brasileira de Limnologia |
dc.source.none.fl_str_mv |
Acta Limnologica Brasiliensia v.22 n.3 2010 reponame:Acta Limnologica Brasiliensia (Online) instname:Associação Brasileira de Limnologia (ABL) instacron:ABL |
instname_str |
Associação Brasileira de Limnologia (ABL) |
instacron_str |
ABL |
institution |
ABL |
reponame_str |
Acta Limnologica Brasiliensia (Online) |
collection |
Acta Limnologica Brasiliensia (Online) |
repository.name.fl_str_mv |
Acta Limnologica Brasiliensia (Online) - Associação Brasileira de Limnologia (ABL) |
repository.mail.fl_str_mv |
||actalb@rc.unesp.br |
_version_ |
1754212635605204992 |